At a time you designate, the computer will automatically dial your number and wait for an answer. When you pick up the telephone you will hear a brief message. Once you speak, the computer assumes you are okay and the call is completed.

The computer will redial your number within a half hour. If you do not respond to the second call, an alarm goes off and the dispatcher will telephone whomever you have designated as contact people who have a key to your house or apartment.